$($a$){\displaystyle \underset{0}{\overset{2}{}}}f(x)dx=$ Blank $1$

$($b$){\displaystyle \underset{0}{\overset{5}{}}}f(x)dx=$ Blank $2$

$($c$){\displaystyle \underset{5}{\overset{7}{}}}f(x)dx=$ Blank $3$

$($d$){\displaystyle \underset{0}{\overset{9}{}}}f(x)dx=$ Blank $4$